A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 4140-00-796-7212
NSN 6620-01-106-6510
NSN 5910-00-482-1466
NSN 5990-01-493-4039
NSN 6320-01-425-1417
NSN 5835-01-253-6160
NSN 7035-01-553-8618
NSN 5920-00-492-5516
NSN 4140-01-466-4284
NSN 5960-01-224-7151
NSN 5910-01-643-8899
NSN 5965-01-062-6237